CN1221946A - Data signal reproducing method and system - Google Patents

Data signal reproducing method and system Download PDF

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Publication number
CN1221946A
CN1221946A CN98123129A CN98123129A CN1221946A CN 1221946 A CN1221946 A CN 1221946A CN 98123129 A CN98123129 A CN 98123129A CN 98123129 A CN98123129 A CN 98123129A CN 1221946 A CN1221946 A CN 1221946A
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China
Prior art keywords
data
speed
rotation
space
storing device
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CN98123129A
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Chinese (zh)
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CN1126095C (en
Inventor
田中博幸
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Renesas Electronics Corp
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NEC Corp
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/28—Speed controlling, regulating, or indicating
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10222—Improvement or modification of read or write signals clock-related aspects, e.g. phase or frequency adjustment or bit synchronisation
    • G11B20/1024—Improvement or modification of read or write signals clock-related aspects, e.g. phase or frequency adjustment or bit synchronisation wherein a phase-locked loop [PLL] is used
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G11B2020/1062—Data buffering arrangements, e.g. recording or playback buffers
    • G11B2020/10675—Data buffering arrangements, e.g. recording or playback buffers aspects of buffer control
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
    • G11B2020/1242—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc the area forming one or more zones, wherein each zone is shaped like an annulus or a circular sector
    • G11B2020/1245—CLV zone, in which a constant linear velocity is used
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
    • G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
    • G11B2020/1461—8 to 14 modulation, e.g. the EFM code used on CDs or mini-discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Rotational Drive Of Disk (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

A disk reproducing system for reproducing data recorded on a disk storing medium, comprises a spindle motor for rotating the disk storing medium, an optical pick-up unit for reading the data recorded on the disk storing medium, a buffer memory for storing the read data, a reprocducing unit for reproducing the data supplied from the buffer memory, and a control unit for controlling the spindle motor's rotating speed of the disk storing medium, thereby to vary a speed of obtaining data from the disk storing medium, according to available space of the buffer memory.

Description

Data signal reproducing method and system
The present invention relates to be used for reappearing the method and system of recorded data signal on a storage medium, in more detail, the present invention relates to a kind of being used for reads the data-signal that stores a buffer storage and gives with one subsequently and put the method and system that speed offers this data-signal one reconstructing portion with arbitrary velocity from storage medium.
This routine data signal reproduction method and system Japanese patent application publication No. for example flat-disclosed among the 8-203196.
The formation of this conventional light disk reproducing system is that the reproducing signal data that obtain from a CD are picked up part by a light and are written in the memory, temporarily stopped when the data volume that writes this memory reaches to give the amount of putting or surpass the data that write this memory when this gives the amount of putting, when one of the reproducing signal data that write this memory give the amount of putting or more volume when this memory is read, then recover to write the data of this memory.
Above-mentioned when temporarily stopping, but the power consumption of obtaining part at data-signal is not reduced so that do not influence other data signal reproducing operation part, for example, the gain conversions that the CTV control servo loop of a CD is rotated in the gain or be used for that light is picked up the focus control servo loop of part is one than low value, interruption offers and is used for the electric current of spindle motor of rotary CD or the constant of the low-pass filter of conversion CLV controller.
In this routine data signal reproduction method and system, because rotate with a constant rate of speed, so be wasted in this this power consumption of temporary transient stopping period at the temporary transient stopping period CD that writes a memory.
In addition, if interrupt offering the electric current of spindle motor at above-mentioned temporary transient stopping period, it need turn back to the speed of rotation of rotary CD one constant rate of speed, for example two times of speed.But because it needs more time that CD is turned back to this constant rotational speed from halted state, so the data efficient that writes memory becomes bad and will consume certain power for this spindle motor turns back to the order speed of rotation from halted state.
In this routine playback system, there are not to consider the reduction of power consumption and the improvement that data write efficient when the rotation of spindle motor.
First purpose of the present invention is will provide a kind of can reduce data signal reproducing method and the system of control such as required power consumptions of drive part such as spindle motors effectively.
Second purpose of the present invention provides a kind of data of can improving and writes efficiency in data signal reproduction method and system in the memory.
According to a first aspect of the invention, a kind of dish playback system that is used for reappearing the data on a disk record medium comprises
Be used for rotating the drive unit that this takes inventory the storage medium,
Being used for reading and recording takes inventory the reader reading data of storage on the medium at this,
Be used for storing the data-storing device of the data of reading by described data fetch device,
Be used for reappearing the data that provide from described data-storing device reproducer and
Be used for that this takes inventory the speed of rotation of the drive unit of storage medium according to the spatial control utilized of described data-storing device, thereby change from the control device of the speed of the resultant data of this disk storage apparatus.
In this optimum structure, described control device control speed of rotation makes the utilized space of described data-storing device can not give above one and puts number.
In another optimum structure, the utilized space of described data-storing device is divided into several size levels, according to utilizing level this speed of rotation in space also to be configured to some speed levels, and described control device detects the utilized space of described data-storing device, thereby controls described drive unit control speed of rotation level according to detected utilized space level.
In another optimum structure, the utilized space of described data-storing device is divided into some levels and can utilizes level this speed of rotation in space also to be some speed levels according to these, and described control device detects the utilized space of described data-storing device, controls this speed of rotation to be a big data acquisition speed and to control this speed of rotation to be small data acquisition speed when the utilized space of detecting belongs to the small size level when the utilized space of detecting belongs to the large scale level.
In another optimum structure, described control device comprise the utilized space that is used for according to described data-storing device provide the speed of rotation that is used for controlling described drive unit control data the control data output unit and be used for being provided with the speed of rotation control device of the speed of rotation of described drive unit according to this control data.
According to a second aspect of the invention, be used for reading in rotate by drive unit one take inventory the storage medium on recorded data, reading of data is stored the data-storing device, and the replay method that a dish playback system of the data provided is provided includes step from described data-storing device:
Detect described data-storing device utilized space and
Reading rate according to these data of the spatial control utilized of described data-storing device makes the utilized space of described data-storing device be no more than a predetermined number.
In this optimum structure, the replay method progress of a dish playback system comprises step:
With the utilized space of described data-storing device be divided into some size levels and according to these can utilize the space level with speed of rotation be set to some speed levels and
Control described drive unit according to detected utilized space level and make this speed of rotation level Be Controlled.
In another optimum structure, the data reproduction method of general playback system further includes step:
With the utilized space of described data-storing device be divided into some size levels and according to these can utilize the space level with speed of rotation be set to some speed levels and
When belonging to the large scale level, detected utilized space controls this speed of rotation being that big data obtain speed and control this speed of rotation to be small data acquisition speed when detected when utilizing the space to belong to the small size level.
Will be more clear after other the purpose, feature and advantage detailed description below of the present invention.
Will have more fully the present invention from following given detailed description of preferred embodiments and accompanying drawing and to understand, still, following explanation is not a limitation of the present invention and only be to exemplary illustration of the present invention.
The block diagram of Fig. 1 is the structure that is used for illustrating the data signal reproducing system when the storage medium of the embodiment of the invention is a CD;
The process flow diagram of Fig. 2 shows and controls the flow process that this optical disc data signal obtains speed according to this embodiment of the invention;
Fig. 3 shows the time dependent example of state of replay method according to the present invention data-storing amount in a buffer storage;
Fig. 4 shows the time dependent example of state according to replay method data-storing amount in a buffer storage of routine.
Go through most preferred embodiment of the present invention below with reference to accompanying drawings.In the following description, in order to provide a large amount of explanations to details to the invention provides comprehensive a understanding.But, can not implement the present invention even do not provide these details for the person of ordinary skill of the art yet.For make the present invention more clear for the purpose of, in other example, known structure will be shown.
The block diagram of Fig. 1 shows the structure of a data signal reproducing system according to this embodiment of the invention.The control flow of Fig. 2 illustrates and is used for illustrating an example that obtains speed according to the control data of data signal reproducing method of the present invention.
Referring to Fig. 1, the playback system of one embodiment comprises the spindle motor 20 that is used to rotate a storage medium 10, optical pickup units 30, prime amplifier 40, PLL circuit 50, EFM signal interpretation unit 60, buffering storage controller 70, buffer storage 80, code translator 90, reproducing unit 100 and speed of rotation controller 110.
Having the storage medium 10 that is recorded data-signal is within it rotated by spindle motor 20.The CD that storage medium 10 persons of being are recorded with the EFM modular approach as the data-signal of mini disk, dense property dish and so on.
Optical pickup units 30 obtains a data-signal and the data-signal that is obtained is delivered to prime amplifier 40 from rotation storage medium 10.Prime amplifier 40 is enlarged into the data-signal that obtains the EFM signal and it is offered PLL circuit 50.
PLL circuit 50 is that EFM reappears clock signal S10 and EFM data-signal S20 and these two signals are offered EFM signal interpretation unit 60 with the EFM Signal Separation.The 60 pairs of EFM data-signals execution correction processing from EFM reproduction clock signal S10 and EFM data-signal S20 in EFM signal interpretation unit offer with the decoding processing and with decoding data and cushion storage controller 70.So composition data signal reading section.
In a single day buffering storage controller 70 advances buffer storage 80 to decoded data-storing, just read decoding data according to giving the reproduction speed of putting from the buffering memory, and these data are offered code translator 90.Reappear the data of being deciphered by code translator 90 by reproducing unit 100.
At this moment, for example, reappear in the situation of device at mini disk, the speed of resulting data-signal is 1.4Mbps when normal speed, and the reproduction of decoding data or read-out speed are 0.3Mbps.Therefore, the decoding data that can not be reproduced just more and more accumulates in the buffer storage 80.
Simultaneously, with reference to Fig. 2 the flow process of obtaining speed according to the spatial control the utilized data of buffer storage 80 is described.
The utilized space of buffer storage 80 (D) for example is divided into level Four (first spare space " D1 " from large space to little space, second spare space " D2 ", the 3rd spare space " D3 ", with the 4th spare space " D4 ") (step 201), can utilize the speed of rotation of space spindle motor 20 to be set to level Four corresponding to level Four.For example, the speed of rotation of spindle motor 20 is changed to standard speed (first rate " S1 "), one half rate of standard (second speed " S2 "), 1/5th speed (the 4th speed " S4 ") of 1/4th speed of standard (third speed " S3 ") and standard.Obtain speed corresponding to each data-signal of each speed of rotation and become 1.4Mbps, 0.7Mbps, 0.35Mbps and 0.28Mbps.
Buffering storage controller 70 detects the utilized space (D) (step 202) of buffer storage 80.At first be first can utilize under the situation of space " D1 " and go on to say in the utilized space of buffer storage 80 (D).
Buffering storage controller 70 selects to be used for to be controlled at the speed of rotation control data (step S203) of the speed that standard speed " S1 " locates, so that obtain the data-signal located at standard speed (first rate), and these data are offered speed of rotation controller 110 (step 204).
Speed of rotation controller 110 according to the speed of rotation control data with standard speed rotary main shaft motor 20 (storage medium 10).Therefore, can obtain this data-signal by the optical pickup units 30 of standard speed 1.4Mbps.
Buffering storage controller 70 offers code translator 90 to give the reproduction speed 0.3Mbps that puts with these data, will sequentially store into buffer storage 80 from EFM signal interpretation unit 60 resulting decoding datas simultaneously.
When this reappears by continuation (step 205), the decoding data that is not reproduced is accumulated in this buffer storage 80.When the utilized space of buffer storage 80 when first can utilize the space to turn back to next stage (second can utilize space " D2 ") (step 202), buffering storage controller 70 selects to have next stage, or standard half speed of rotation (the second speed S2) speed of rotation control data (step 203) and speed of rotation control data signal S30 offered speed of rotation controller 110 (step 204).
In this case, according to this speed of rotation controller 110 of speed of rotation control data with the second speed S2 rotary main shaft motor 20 (storage medium 10).Therefore, can obtain the data-signal of standard speed 0.7Mbps by optical pickup units 30.
Afterwards, when the utilized space of buffer storage turns back to next stage (step 202), from this speed of rotation control data, select the data (step 203) of next stage, these data are provided for speed of rotation controller 110 (step 204), speed of rotation controller 110 turns back to next stage with speed of rotation, and obtains this data by optical pickup units 30.
When spindle motor 20 was subjected to an external impact, the data acquisition operations of optical pickup units 30 was temporarily ended.At this moment, when if the reproduction process of decoding data continues, the not reproduction decoding data of storage reduces in buffer storage 80, and when the external impact past tense, then thereby data-signal obtains to operate to be resumed and obtains this data-signal, simultaneously according to the speed of rotation of the spatial control the utilized spindle motor 20 of aforesaid buffer storage 80, thereby it can reappear this decoding data and need not temporarily interrupt.
Fig. 3 shows according to above-mentioned data and obtains method of rate control by obtaining the example of time variable condition that speed is the utilized space of constant conventional clear condition (Fig. 4) the relevant buffer storage 80 of comparing with data, and wherein the Z-axis decoding data storage capability and the transverse axis that show buffer storage 80 shows institute's elapsed time.
In regular situation shown in Figure 4, by spindle motor with a constant rate of speed (two times of speed) rotation storage medium obtain data-signal up to buffer storage satisfy one give put the data-storing amount till, and subsequently this data-signal obtain operation supspended to the not reproduction decoding data quantitative change to buffer storage be give the amount of putting or be lower than give the amount of putting till.At this moment, spindle motor rotates with a constant rate of speed (two times of speed).When the not reproduction decoding data quantitative change of buffer storage is given the amount of putting or is lower than this for this when giving the amount of putting, data-signal obtains that operation is resumed once more and data obtain operation continued up to this buffer storage become this give put the data-storing amount till.
The shortcoming that this routine data signal reproduction system has is owing to keep with a constant rate of speed rotation power consumption being wasted at the interval CD that writes a memory.
When the power that offers spindle motor at interval is interrupted, write in restore data under the situation of memory, it must turn back to the CD of rotation the constant speed of rotation such as two times of speed.But, CD is turned back to a constant speed of rotation from illegal state will spend many times, so the data efficient that writes memory is worsened and will be consumed certain power for spindle motor is turned back to initial speed of rotation from illegal state.
On the other hand, in the example of the replay method of the present invention of Fig. 3, according to the utilized space of buffer storage 80 (D1, D2, D3, D4) level can be that the level Four speed of rotation obtains by the speed of rotation of control spindle motor 20.When the utilized space of this buffer storage 80 D becomes last I and utilizes space D4, spindle motor 20 rotates with speed of rotation S4, just these data obtain speed and approach to be used for decoding data is sent to the reading rate of reproducing unit, so that obtain this data.Therefore, the not playing data for broadcasting amount of this buffer storage 80 remains on a constant basis substantially.
Even also continue to carry out because this data acquisition operations is suspended this reproduction process under an external impact situation, so the decoding data amount of storage reduces.When the problem such as external impact was excluded, the restore data signal obtained operation.At this moment, translate the logarithmic data amount according to the not reproduction of storage in buffer storage 80, the speed of rotation of spindle motor is little by little controlled, and is to give the maximum of putting again thereby make the data volume of this buffer storage 80, and after this repeats identical operations.
In the above-described embodiments, to be changed to the speed of rotation of level Four and this spindle motor 20 be can utilize the level Four in space to be controlled in level Four according to this to be described in this explanation utilized space of being based on buffer storage 80.But this can utilize space and speed of rotation to be divided into how many levels and be not limited to the foregoing description.For example, this can utilize space and speed of rotation can be divided into secondary or be divided into Pyatyi or more level.
Present embodiment can be realized by the buffering storage control module of controlling a control function of speed of rotation according to the utilized space of buffer storage that has as hardware in the data reproduction method shown in Fig. 2, also can realize by the computer program with this function in the memory of inserting computer processor.This computer program is stored among the storage medium such as disk, semiconductor memory etc.This program is packed computer processor into so that the operation of control computer processor from storage medium, thereby realizes above-mentioned each function.
As mentioned above, data signal reproducing method of the present invention and system can reduce being used for such as spindle motor rotate storage medium drive part power consumption and need not supspend data-signal and obtain operation, this is because it was designed in the time that will be stored by the decoding data that this storage medium reads in the buffer storage, according to the utilized space of this buffer storage, control data is controlled selectively so that suitably control is used for obtaining speed from the data of this storage medium readout data signal.In addition, different with conventional method, the efficient that it can not make data write memory becomes bad, and this is to obtain operation because it needn't supspend this data-signal, and to give the amount of putting or be lower than when giving the amount of putting also be like this even the not reproduction decoding data amount of buffer storage does not become.
Though the invention has been described according to exemplary embodiment, it will be apparent to those skilled in the art that and to make various variations, omission or interpolation to the present invention under the prerequisite of the spirit and scope of the present invention.Therefore, the present invention should not be construed as and is limited to above-mentioned certain embodiments, but comprises the enforceable all possible embodiment within the characteristic range that is included in and is equivalent to claims.

Claims (9)

1, a kind of be used for reappearing be recorded in the dish reproducer of taking inventory the data of storage on the medium, comprising:
Be used for the drive unit of rotating disc storage medium;
Being used for reading and recording takes inventory the data fetch device of the data of storage on the medium at this;
Be used for storing the data-storing device of reading according to the reading device data streams read by described;
Be used for reappearing the reproducer of the data that provided by described data-storing device;
Be used for taking inventory the control device of the speed of the resultant data of storage medium with change from this according to this speed of rotation of taking inventory the described drive unit of storage medium of the spatial control utilized of described data-storing device.
2, dish playback system as claimed in claim 1, wherein:
Described control device is controlled this speed of rotation, gives the amount of putting thereby make the utilized space of described data-storing device be no more than one.
3, dish playback system as claimed in claim 1, wherein:
This takes inventory the storage medium is a CD.
4, dish playback system as claimed in claim 1, wherein:
The utilized space of described data-storing device is divided into some size levels, and according to can utilizing the space level, this speed of rotation be divided into some speed levels and
Described control device detects the utilized space of described data-storing device, controls described drive unit, thereby according to the level control speed of rotation level in detected utilized space.
5, dish playback system as claimed in claim 1, wherein:
The utilized space of described data-storing device is divided into some size levels, and according to can utilizing the space level, this speed of rotation be divided into some speed levels and
Described control device, detect the utilized space of described data-storing device, control this speed of rotation, be that big data obtain speed when belonging to the large scale level with detected the utilized space of box lunch, with this speed of rotation of control, be that a small data obtains speed when belonging to the small size level with detected the utilized space of box lunch.
6, dish playback system as claimed in claim 1, wherein:
Described control device comprises:
Be used for utilized space according to described data-storing device be provided for controlling described drive unit speed of rotation control data the control data output unit and
Be used for being provided with the speed of rotation control device of the speed of rotation of described drive unit according to this control data.
7, a kind ofly be used for reading in the data of storing on the storage medium by the drive unit rotation, with the data-storing that reads in the data-storing device, data reproduction method with the dish playback system that the data that provided from described data-storing device are provided comprises step:
Detect the utilized space of described data-storing device; With
According to the utilized space of described data-storing device, control the reading rate of these data, so that being no more than one, the utilized space of described data-storing device gives the amount of putting.
8, the data reproduction method of dish playback system as claimed in claim 7 further comprises step:
The utilized space of described data-storing device is divided into some size levels, and can utilizes the space level that this speed of rotation is divided into some speed levels according to this; With
Thereby control described drive unit control speed of rotation level according to the utilized space level that is detected.
9, the data reproduction method of dish playback system as claimed in claim 7 further includes step:
The utilized space of described data-storing device is divided into some size levels, and can utilizes the space level that speed of rotation is divided into some speed levels according to this; With
Controlling this speed of rotation, be that big data obtain speed and work as when the utilized space of being detected belongs to the small size level when belonging to the large scale level with the utilized space that box lunch was detected is that small data obtains speed.
CN98123129A 1997-10-27 1998-10-27 Data signal reproducing method and system Expired - Fee Related CN1126095C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP294361/1997 1997-10-27
JP9294361A JPH11134772A (en) 1997-10-27 1997-10-27 Reproducing method and reproducer of data signal
JP294361/97 1997-10-27

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Publication Number Publication Date
CN1221946A true CN1221946A (en) 1999-07-07
CN1126095C CN1126095C (en) 2003-10-29

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CN98123129A Expired - Fee Related CN1126095C (en) 1997-10-27 1998-10-27 Data signal reproducing method and system

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JP (1) JPH11134772A (en)
KR (1) KR100280247B1 (en)
CN (1) CN1126095C (en)
TW (1) TW392144B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6836454B2 (en) 2000-03-08 2004-12-28 Hitachi, Ltd. Method and apparatus for reading and writing information onto and from information recording disks
DE60119209T2 (en) * 2000-03-31 2007-02-15 Matsushita Electric Industrial Co., Ltd., Kadoma An information recording and reproducing apparatus, information recording and reproducing method and information signal source therefor

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KR100280247B1 (en) 2001-03-02
CN1126095C (en) 2003-10-29
TW392144B (en) 2000-06-01
JPH11134772A (en) 1999-05-21
KR19990037387A (en) 1999-05-25

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Address after: Kawasaki, Kanagawa, Japan

Patentee after: Renesas Electronics Corporation

Address before: Kawasaki, Kanagawa, Japan

Patentee before: NEC Corp.

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Granted publication date: 20031029

Termination date: 20131027